Protecting your home network starts with a strong password, which becomes the first barrier to intruders. If you are a subscriber to the Belarusian provider ByFly and use equipment ZTE, changing the default access key is not just a recommendation, but a necessity. Many users put this off because they don't know how to access the device's settings, but the process is quite simple and takes only a few minutes.
Changing the password on the router ZTE F660 On older models, a wireless security system prevents internet traffic theft and protects your personal data from interception. The standard combinations found on the bottom of the device are often the same across entire series of devices, making them vulnerable to attack. In this article, we'll detail a step-by-step guide to securing your wireless network.
Please note that after changing the settings, all connected devices (smartphones, tablets, TVs) will require you to re-enter the new password. This is a standard security feature that ensures only authorized users have access. Before beginning the procedure, make sure you are connected to the router either via cable or your current WiFi network.
Preparing for setup and checking the connection
The first step before making any changes to the modem configuration is to physically connect it to the device. For maximum connection reliability and stability, experts recommend using a wired connection via a LAN port, as this eliminates the risk of connection loss while saving settings. If this isn't possible, ensure your laptop or phone has a strong signal from the current WiFi connection.
You need to know the IP address of the gateway used to access the control panel. For most ZTE models used by the ByFly provider (e.g., F670, 670L), the standard address is 192.168.1.1However, in some cases, your ISP may have changed this setting, so it's worth checking your computer's network settings. You'll also need your login and password to access the web interface, which are often found on a sticker on the device (usually admin / admin or user / user).
⚠️ Caution: If you're changing settings via WiFi, make sure your laptop's battery is charged or use an extension cord. Sudden loss of power to the router while the configuration is being written may result in firmware corruption.
Open any modern browser (Chrome, Firefox, Edge) and enter the IP address in the address bar. Don't confuse the address bar with the search bar: you must enter numbers separated by dots. If the page doesn't load, check whether your network card is set to obtain an IP address automatically.
Logging into the ZTE modem web interface
After entering the IP address in your browser, a login page will open. The interface may differ depending on the firmware version installed by your carrier, but the basic principles remain the same. You'll be asked to enter your login credentials. For standard ByFly settings, a login pair is often used. admin and password admin, or user And user.
If the default combinations don't work, carefully examine the sticker on the bottom of the router. It may contain unique credentials specific to your device. In rare cases, if the password was previously changed and lost, a full factory reset will be required. This will restore access but require reconfiguring the internet.
The ZTE interface is usually presented as a menu on the left or top. We need to find the section responsible for the wireless network. It may be called Network, WLAN, Wireless or have an antenna icon. In some ByFly firmware versions, the settings are located in a separate tab. WLAN in the top menu.
Find the wireless settings section
After successful authorization, the router control panel will open. The ZTE interface may look austere and technical, but navigation is logical. Look for the item in the left-hand menu Network (Network) and then expand the sub-item WLAN (Wireless LAN). This is where all parameters related to the radio module are located.
Within the WLAN section, you are interested in the subsection Security (Security) or WLAN SecurityThis is where the fields for changing the password and selecting the encryption type are located. It is important not to confuse this section with Basic (Basic settings), where only the network name (SSID) changes, although sometimes these settings are combined in one tab.
Pay attention to the parameter WPA PreSharedKey or PassphraseThis field contains the current password for your WiFi network. To change it, simply erase the old characters and enter a new combination. Make sure the authentication type is selected. WPA2-PSK or WPA/WPA2-PSK, as these are the most secure and compatible protocols at the moment.
| Setting parameter | Recommended value | Description |
|---|---|---|
| SSID Name | Unique name (in Latin) | The name of your network that appears in searches |
| Authentication Type | WPA2-PSK | The type of encryption that provides security |
| Encryption Method | AES | Data encoding algorithm |
| WPA Passphrase | 8-63 characters | Password to connect to the network |
Creating a strong password and setting up security
Creating a new password is a critical step. Many users make the mistake of using simple sequences of numbers or birth dates. To ensure true security, password must be at least 8 characters long and contain uppercase and lowercase letters, as well as numbers. Special characters are also welcome if your devices support them correctly.
Avoid using dictionary words or obvious replacements (e.g., "password123"). ZTE modems support ASCII encoding, so it's best to limit the number of characters to Latin characters to avoid connection issues with some smart devices or older smartphones that may incorrectly display Cyrillic or special characters in the password entry field.
⚠️ Note: Router interfaces and provider requirements are subject to change. If you don't see the described points, check the latest information with ByFly technical support or on the official website for the equipment.
After entering the new access key, be sure to press the button Submit or Apply (Apply) at the bottom of the page. Without this step, all changes you make will remain only in the browser's memory and will not be saved to the router configuration. The system may ask you to confirm the action—accept it.
☑️ Criteria for a strong password
Saving settings and rebooting the equipment
After you click the save button, the ZTE router will begin applying the new settings. This process can take 10 to 30 seconds. During this time, the wireless network will become unavailable, and the current connection will be lost. This is a normal reaction to changes in encryption keys.
Some firmware versions require a manual reboot for the changes to take effect. If you see a success message after saving but still don't have internet access, try unplugging the router for 10 seconds and then plugging it back in. Wait until the indicator light turns off. WLAN or WiFi will not light up or start flashing to indicate that the module is ready.
Now you need to reconnect your devices. Find your network name (SSID) in the list of available networks, select it, and enter a new password. If the connection is successful, you will see a connection icon without exclamation marks. It is recommended to test the internet connection on one device before setting up the others.
What to do if the router does not save the password?
Sometimes, after clicking the "Save" button, the ZTE router resets its settings or becomes unresponsive. This could be due to memory being full or a firmware bug. Try a hard reset and reconfiguring the network. If the problem persists, a firmware update may be required, but it's best to leave this procedure to technical support to avoid bricking the device.
Solving common problems when changing your password
Users may encounter a situation where the device displays "Incorrect Password" even though the password was entered exactly as instructed. This is often due to the keyboard layout or accidentally enabling Caps Lock. Furthermore, some devices (especially game consoles or Smart TVs) may "remember" the old network profile and attempt to connect using its details, ignoring the new input.
In this case, you need to find your network in the WiFi list on the affected device, select "Forget Network," and only then re-enter the password. This will clear the network settings cache and force the device to request updated authorization data.
If you can't access your router settings at all, check whether your antivirus or firewall is blocking access to local addresses. Also, try using incognito mode in your browser or a different browser. In rare cases, clearing the DNS cache and cookies may help.
Additional measures to protect your home network
Changing your password is a basic, but not the only, step to security. You can also hide the network name (SSID Broadcast) in ZTE settings. This will hide your Wi-Fi network from the public list, requiring you to enter the name manually to connect. This will make life more difficult for random neighbors looking for a free internet connection.
It's also recommended to regularly update your router firmware if your provider offers this option through your personal account or automatic notifications. Outdated software may contain vulnerabilities that allow attackers to access the device even with the Wi-Fi password.
Remember that responsibility for the use of your communication channel lies with the owner of the equipment. By controlling who is connected to your network through the section Attached Devices or Client List In the ZTE interface, you can quickly identify intruders and block them by MAC address.
What should I do if I forgot my new password immediately after changing it?
If you changed your password and immediately forgot it, the only way to regain access is to log in to the router settings again (via cable, as WiFi no longer works without a password) and view the current key in the security section. If you can't access the settings, you'll have to perform a factory reset using the Reset button, which will reset the password to the one on the sticker.
Is it possible to change the password through the app on the phone?
ByFly may not have an official app for configuring ZTE modems, or it may have limited functionality. However, you can use any browser on your smartphone (Chrome, Safari), connect to WiFi, and go to 192.168.1.1. The interface adapts to the mobile screen, and you can change the password just like on a computer.
Does changing your password affect your internet speed?
No, changing your password does not affect speed. However, if you change the encryption type from WPA2 to the older WEP or vice versa, it may impact compatibility and data transfer speed. Always select WPA2-PSK (AES) for optimal speed and security.